Now, that's unique. I have never gotten that complaint/or seen that happen.
Does this happen to all the nails? If so, your body/toes are going through aging changes. When we age, our skin loses the turgor and everything starts to stretch/sag.
It may be that the nail bed under your toes are doing that.
If this is an isolated incident to a few toes, you may have traumatized the toe and created increase tissue growth of the nail bed.
I suggest filing the nails weekly so you don't have to cut them and risk bleeding.
Thanks for the response. Yah, I had the experience of clipping too close. It's pretty much all the toes and no history of foot trouble of that nature in my family. I too thought it was aging. I did not know if footcare people pushed such flesh back as may happen with a cuticle.
I will use one of my diamond files carefully for this. Other thing with age is these things get harder to do.
Lastly I've noticed some shape change of the quick under the fingernails as well-- nothing real extreme. But the same advancing at the tip shape.